6. Sitta carolinensis aculeata.—One pair found breeding in the knot-hole of a large fir. Young hatched on or shortly before the 25 June.
7. Neocorys spraguei.—A pair breeding on a high, grass-covered knoll just outside the timber. The male was often observed flying high overhead, constantly shifting his position, but keeping at about the same elevation while uttering his song—a rather monotonous carol, unless one is sufficiently near to hear the wonderful resonance of the blended notes.
8. Dendrœca auduboni.—Common.
9. Pyranga ludoviciana.—Rather common. A female observed nest-building June 26, the male meantime singing in a neighboring treetop. July 3 the nest was apparently completed but without eggs. It was built in a fir some thirty feet from the ground and about midway on a small horizontal limb where several twigs projected out on either side.
10. Cotyle riparia.—Swallows apparently of this species were seen flying high overhead. Their homes were found lower down on the streams.
11. Vireo gilvus swainsoni.—A common bird in the cañons.
12. Carpodacus purpureus.—Two individuals observed.
13. Chrysomitris pinus.—A flock of these restless little creatures appeared almost daily, uttering their querulous notes.
14. Poœcetes gramineus confinis.—Common on the grassy slopes.
15. Melospiza fasciata fallax.—Occasional among the willows of the streams.